FVXX21 KWBC 301300 VOLCANIC ASH ADVISORY STATEMENT ISSUED 1300 UTC 30 DEC 1999 BY THE WASHINGTON VAAC . TUNGURAHUA 99-314 ECUADOR 1.47S 78.44W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE AND INFRARED AND MULTISPECTRAL IMAGERY...GEOPHYSICAL INSTITUTE IN QUITO. . ERUPTION DETAILS: INTERMITTENT ASH AND STEAM EMISSIONS... . DETAILS OF ASH: SATELLITE IMAGERY THROUGH 30/1215 UTC SHOWS SKIES HAVE CLEARED OVER THE VOLCANO BUT THERE IS NO EVIDENCE OF ASH AT THIS TIME IN THE VICINITY OF THE VOLCANO. . TRAJECTORY: IF THERE WAS ASH UP TO FL190 IT WOULD MOVE NORTHEAST AT 10 KTS. ASH FROM FL190 TO FL250 WOULD MOVE WEST AT LESS THAN 10 KTS. . REAL TIME SATELLITE IMAGERY ALONG WITH THIS AND OTHER VOLCANIC ASH ADVISORY STATEMENTS OFTEN ACCOMPANIED BY A MAP DEPICTING ASH LOCATION ARE AVAILABLE AT INTERNET URL ADDRESS http://www.ssd.noaa.gov/VAAC/washington.html (all lower case except /VAAC/) . OUTLOOK: SEE SIGMETS. . EFFECTIVE JANUARY 3 2000 AT 0000 UTC... ALL REFERENCES TO LATITUDE AND LONGITUDE IN VOLCANIC ASH ADVISORY STATEMENTS WILL BE IN DEGREES AND MINUTES OF A DEGREE. EXAMPLE: 16.70N 62.20W WILL BE 1642N6212W . THE NEXT STATEMENT WILL BE ISSUED BY 30/1900 UTC. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . KARST/SAB/NOAA/NESDIS . NNNN